Kurt Cobain’s widow Courtney Love and their daughter Frances Bean Cobain put their years of estrangement behind them on Saturday as they kissed and hugged at the premiere of a new documentary about the late Nirvana rocker.

Mother and daughter were among the stars who walked the red carpet at Utah’s Sundance Film Festival to celebrate the launch of “Kurt Cobain: Montage of Heck,” which was directed by Brett Morgen and executive produced by 22-year-old Frances.

The film features a handful of interviews with Love, Cobain’s parents and Nirvana bassist Krist Novoselic, but another chat with fellow Nirvana bandmate Dave Grohl failed to make the initial cut in time for the Sundance premiere as Morgen simply didn’t have time to re-work the piece as the additional interview only took place earlier this month.

He tells Billboard.com, “We had a locked print and trying to re-edit a film with a new interview in 10 days is kind of difficult.

“This is the picture I wanted – I didn’t want there to be a lot of people in the film. I hope we’ll see a version (with the Grohl interview) some time.”

Love initially took the film idea to Morgen in 2007 after he impressed her with his 2002 Robert Evans biopic, “The Kid Stays in the Picture,” and she gave him access to her personal archives.

However, she was refused editorial control over the project as she features as one of the documentary’s subjects, and Frances was instead brought in to oversee the picture.

Morgen explains, “First Courtney was involved, then Frances became involved. Frances Bean is really why we’re all here. This movie is for her. Frances and I shared the exact same vision about what this film should be; everybody came on board.”

Taking to Twitter.com after the screening, Love admitted she had mixed feelings about the film, writing, “So sad @brettmorgen @alka_seltzer666 (Frances Bean Cobain) so so sad yet so uplifting, beautiful and gorgeous. Your daddy would be so proud of you baby. thank u.”

The Hole frontwoman ended years of estrangement with her only child in 2013, four years after she was stripped of her parental rights as she battled substance abuse issues. A judge appointed her daughter’s paternal grandmother, Wendy O’Connor, and her aunt Kimberly Cobain as co-guardians until she turned 21 in 2013.